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Asif I, Rafique U. Synthesis & fabrication of O-linked polymeric hybrids for recovery of textile dyes: Closed loop economy. ENVIRONMENTAL RESEARCH 2023; 236:116780. [PMID: 37527750 DOI: 10.1016/j.envres.2023.116780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/23/2023] [Accepted: 07/27/2023] [Indexed: 08/03/2023]
Abstract
Dyes are an important resource employed for the production systems in textile, paper, paint and leather industry. An estimate of 200,000 tons of dyes are discharged as textile effluent each year worldwide. It becomes imperative to recover these dyes by treating the effluents using economically viable routes. The present research was undertaken with the objective to attain zero emission and zero waste through development of novel polymeric hybrids as adsorbents. For this purpose, metal moieties (Al3+, Si4+, Ti4+ and Zr4+) were hybridized with polyacrylic acid, and cellulose acetate for the uptake of selected dyes under optimized parameters. The structural elucidation of four synthesized hybrids (MP-Al, MP-Si, MP-Ti and MP-Zr) by FTIR, EDX and TGA confirmed O-linked grafting of metal moieties with polymers and thermally stable porous materials. SEM micrographic images displayed void spaces providing channels for effective adsorption. The batch experiments demonstrated removal of malachite green (77-96%) and congo red (70-82%) upon contact of initial 45 min on polymeric hybrids On the other hand, pristine polyacrylic acid and cellulose acetate showed remarkably low removal of dyes. The adsorption mechanism is proposed as physical in nature following type II isotherm. Further, Langmuir and Ho's pseudo second order fitness was evaluated. In order to determine the economic viability of the present research, the real textile dyes were recovered in three consecutive cycles of adsorption and chemical treatment of hybrids. The results propose a system with positive impact on economy by maximum utilization of hybrids as adsorbents and recovery of textile dyes for reuse in textile processing.
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Affiliation(s)
- Irum Asif
- Department of Environmental Sciences, Applied Chemistry Lab, Fatima Jinnah Women University, The Mall, Rawalpindi, 46000, Pakistan.
| | - Uzaira Rafique
- Faculty of Science & Technology, Fatima Jinnah Women University, The Mall, Rawalpindi, 46000, Pakistan.
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Massoud A, Mahmoud HH. Performance appraisal of a cross-linked polymer prepared by gamma radiation for the removal of copper and its binding mechanism. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2022. [DOI: 10.1080/1023666x.2022.2138136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Ayman Massoud
- Nuclear Chemistry Department, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Hazem H. Mahmoud
- Central Lab. for Elemental and Isotopes Analysis, NRC, Egyptian Atomic Energy Authority, Cairo, Egypt
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Hamsan MH, Halim NA, Demon SZN, Sa’aya NSN, Kadir MFZ, Abidin ZHZ, Poad NA, Kasim NFA, Razali NAM, Aziz SB, Ahmad KA, Miskon A, Nor NM. Multifunction Web-like Polymeric Network Bacterial Cellulose Derived from SCOBY as Both Electrodes and Electrolytes for Pliable and Low-Cost Supercapacitor. Polymers (Basel) 2022; 14:polym14153196. [PMID: 35956709 PMCID: PMC9371068 DOI: 10.3390/polym14153196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/25/2022] [Accepted: 08/01/2022] [Indexed: 11/25/2022] Open
Abstract
In this work, bacterial cellulose (BC)-based polymer derived from a symbiotic culture of bacteria and yeast (SCOBY) are optimized as both electrodes and electrolytes to fabricate a flexible and free-standing supercapacitor. BC is a multifunction and versatile polymer. Montmorillonite (MMT) and sodium bromide (NaBr) are used to improve mechanical strength and as the ionic source, respectively. From XRD analysis, it is found that the addition of MMT and NaBr has reduced the crystallinity of the electrolyte. Most interaction within the electrolyte happens in the region of the OH band, as verified using FTIR analysis. A maximum room temperature conductivity of (1.09 ± 0.02) × 10−3 S/cm is achieved with 30 wt.% NaBr. The highest conducting SCOBY-based electrolytes have a decompose voltage and ionic transference number of 1.48 V and 0.97, respectively. The multiwalled carbon nanotube is employed as the active material held by the fibrous network of BC. Cyclic voltammetry shows a rectangular shape CV plot with the absence of a redox peak. The supercapacitor is charged and discharged in a zig-zag-shaped Perspex plate for 1000 cycles with a decent performance.
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Affiliation(s)
- Muhamad Hafiz Hamsan
- Department of Physics, Centre for Defence Foundation Studies, National Defence University of Malaysia, Sungai Besi Camp, Kuala Lumpur 57000, Malaysia
| | - Norhana Abdul Halim
- Department of Physics, Centre for Defence Foundation Studies, National Defence University of Malaysia, Sungai Besi Camp, Kuala Lumpur 57000, Malaysia
- Correspondence:
| | - Siti Zulaikha Ngah Demon
- Department of Physics, Centre for Defence Foundation Studies, National Defence University of Malaysia, Sungai Besi Camp, Kuala Lumpur 57000, Malaysia
- Centre for Tropicalization, National Defence University of Malaysia, Sungai Besi Camp, Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Nurul Syahirah Nasuha Sa’aya
- Faculty of Defence Science & Technology, National Defence University Of Malaysia, Sg Besi Camp, Sungai Besi, Kuala Lumpur 57000, Malaysia
| | | | - Zul Hazrin Zainal Abidin
- Centre for Ionics University of Malaya (C.I.U.M.), Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Nursaadah Ahmad Poad
- Faculty of Defence Science & Technology, National Defence University Of Malaysia, Sg Besi Camp, Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Nurul Farhana Abu Kasim
- Faculty of Defence Science & Technology, National Defence University Of Malaysia, Sg Besi Camp, Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Nur Amira Mamat Razali
- Faculty of Defence Science & Technology, National Defence University Of Malaysia, Sg Besi Camp, Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Shujahadeen B. Aziz
- Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq
- The Development Center for Research and Training (DCRT), University of Human Development, Kurdistan Region of Iraq, Sulaymaniyah 46001, Iraq
| | - Khairol Amali Ahmad
- Faculty of Engineering, National Defence University of Malaysia, Kem Sg Besi, Kuala Lumpur 57000, Malaysia
| | - Azizi Miskon
- Faculty of Engineering, National Defence University of Malaysia, Kem Sg Besi, Kuala Lumpur 57000, Malaysia
| | - Norazman Mohamad Nor
- Faculty of Engineering, National Defence University of Malaysia, Kem Sg Besi, Kuala Lumpur 57000, Malaysia
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